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A water-soluble sorbitol polyglycidyl ether (SPE) epoxy monomer was cured with a waterborne polyamine hardener to prepare a fully waterborne epoxy system. Aluminum diethyl phosphinate (AlPi) and melamine cyanurate (MC) flame retardants (FRs) were utilized to develop the flame retardancy of this epoxy matrix. The effect of loading different weights of MC with only 1%P-content from AlPi was discussed to investigate the possible cooperative effect of these two FRs. The best results were obtained at 5% MC loading with 1%P of AlPi as the self-extinguishing behavior was observed with a good limiting oxygen index (LOI). Furthermore, under forced flaming conditions in cone calorimetry measurements, the peak of heat release rate (pHRR) decreased by 27.4%, and the total heat release (THR) decreased by 14.5% compared to the reference epoxy system. This enhancement of flame retardant properties might indicate the synergistic effect between MC and AlPi in a waterborne system. [ABSTRACT FROM AUTHOR]

Metal-organic frameworks [M2L3]n have been synthesized using ferrocene-based ligand bearing phosphinic groups L = 1,1'-ferrocenediyl-bis(H-phosphinic acid)) and M(III) = Eu, Dy. Structures of complexes 1 and 2 are studied by IR and powder XRD analyses and shown to be isomorphic. The thermal decomposition of the synthesized compounds was studied by differential scanning calorimetry and thermogravimetry. [ABSTRACT FROM AUTHOR]

Metal-organic frameworks [M2L3]n have been synthesized using ferrocene-based ligand bearing phosphinic groups L = 1,1′-ferrocenediyl-bis(H-phosphinic acid)) and M(III) = Eu, Dy, Y. Structures of complexes 1–3 are studied by TG, IR and powder XRD analyses and shown to be isomorphic. The redox properties of the CPs 1–3 were studied. [ABSTRACT FROM AUTHOR]

Porous aerogel has been synthesized using ferrocene-based ligand bearing phosphinic groups (H2fcdHp = 1,1′-ferrocenediyl-bis(H-phosphinic acid)). Fe-fcdHp was obtained in a sol–gel approach followed by supercritical CO2 drying. The N2 adsorption properties of the aerogel were investigated. [ABSTRACT FROM AUTHOR]

series of sodium methyl(α-(substituted phenoxyacetoxy)alkyl)phosphinates was designed and synthesized. Their structures were confirmed by IR, ¹H NMR and elemental analysis, and some of them were further confirmed by MS. The results of bioassay showed that most of title compounds exhibited moderate to good herbicidal activities against the root of barnyard grass and rape at 10~100 mg/L. [ABSTRACT FROM AUTHOR]

A series of [(substituted phenoxyacetoxy)(substituted phenyl)methyl](methyl)phos- phinates containing fluorine were designed and synthesized. All the synthesized compounds were identified by elemental analysis, IR,1H NMR, mass spectrometry.O-methyl [(2-fluorophenoxyacetoxy)(2,4-dichlorophenyl)methyl](methyl)phosphinate was further analyzed by X-ray single-crystal diffraction. Their herbicidal activity against a set of weed species was examined. Some of the compounds showed potential herbicidal activity, which provided some indications for further studies on structure modification. Supplemental materials are available for this article. Go to the publisher's online edition ofPhosphorus, Sulfur, and Silicon and the Related Elementsto view the free supplemental file. [ABSTRACT FROM AUTHOR]

In this work, the reactions of diphenylphosphinic chloride, (C6H5)2P(O)Cl, 1, with the sodium salts of sterically hindered phenol derivatives (2a-2j) were investigated. Novel alkyl-substituted aryl diphenyl phosphinate esters (C6H5)2P(O)OAr (3-12) were obtained from these reactions. Satisfactory analytical and spectroscopic results were obtained for all the new compounds. GRAPHICAL ABSTRACT [ABSTRACT FROM AUTHOR]

Adenylate kinases are involved in the activation of antiviral drugs such as the acyclic phosphonates analogs PMEA and (R)PMPA. We examine the in vitro phosphorylation of PMEA and PMPA bearing a borano- or a H- group on the phosphorus atom. The α-borano or α-H on PMEA and PMPA were detrimental to the activity of recombinant human AMP kinases 1 and 2. Docking PMEA to the active site of AMP kinase 1 indicated that the borano group may prevent two conserved critical Arg interactions with the α-phosphate, resulting in substrate bad positioning. [ABSTRACT FROM AUTHOR]

Herein we report a facile synthesis of esters of bis‐α‐aminoalkylphosphinic acids obtained by an addition of Cbz‐protected phosphinic analogues of amino acid methyl esters to an appropriate imine in refluxing benzene. Complete deprotection of the esters could be achieved in one step by the action of 30% HBr in acetic acid. [ABSTRACT FROM AUTHOR]

A new route for the synthesis of some mixed organic phosphorus compounds from 1,3-dioxolan-2-one is reported. By heating a mixture of phosphorus-chlorine derivatives and 1,3-dioxolan-2-one in the presence of a catalyst, mixed phosphorus derivatives having 2-chloroethyl ester groups could be obtained. A wide range of phosphorus derivatives can be obtained using this method. [ABSTRACT FROM AUTHOR]

In this paper, the synthesis and the study of some coordination polymers of Mn (II) with ligands derived from acids: dinaphtylphosphinic, dinaphtylthiophosphinic and dinaphtyldithiophosphinic are presented. The synthesis was accomplished by refluxing in organic solvents the reactants: acetylacetonate of Mn (II) and one of the respective phosphinic acids. Studies were performed applying the following methods: chemical analysis, gel chromatography: IR-spectroscopy; ESR, X-ray diffraction, thermogravimetric analysis and electrical resistance measurements in the field of temperature 20-200°C. All the studied compounds present semiconductor properties, having the resistivity of 10 -8 ohm·cm -1 . The activation energy is approximately 0.9 eV; they also present a good thermal stability resisting to the heat effect till at least 300°C. The semiconductor properties are depending on the nature of the ligands. These results are comparable to the semiconductor properties of other coordination polymers of transitional metals. Based on experimental data and literature indications, the structural formulae of these compounds are assigned. [ABSTRACT FROM AUTHOR]

A series of sodium methyl α-(substituted phenoxy acetoxy)-alkyl phosphinates were synthesized under mild condition by a simple efficient procedure. [ABSTRACT FROM AUTHOR]